<?php
//dezend by http://www.yunlu99.com/ QQ:270656184
class Services_JSON
{
	public function Services_JSON($use = 0)
	{
		$this->use = $use;
	}

	public function utf162utf8($utf16)
	{
		if (function_exists('mb_convert_encoding')) {
			return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
		}

		$bytes = (ord($utf16[0]) << 8) | ord($utf16[1]);

		switch (true) {
		case (127 & $bytes) == $bytes:
			return chr(127 & $bytes);
		case (2047 & $bytes) == $bytes:
			return chr(192 | (($bytes >> 6) & 31)) . chr(128 | ($bytes & 63));
		case (65535 & $bytes) == $bytes:
			return chr(224 | (($bytes >> 12) & 15)) . chr(128 | (($bytes >> 6) & 63)) . chr(128 | ($bytes & 63));
		}

		return '';
	}

	public function utf82utf16($utf8)
	{
		if (function_exists('mb_convert_encoding')) {
			return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
		}

		switch (strlen($utf8)) {
		case 1:
			return $utf8;
		case 2:
			return chr(7 & (ord($utf8[0]) >> 2)) . chr((192 & (ord($utf8[0]) << 6)) | (63 & ord($utf8[1])));
		case 3:
			return chr((240 & (ord($utf8[0]) << 4)) | (15 & (ord($utf8[1]) >> 2))) . chr((192 & (ord($utf8[1]) << 6)) | (127 & ord($utf8[2])));
		}

		return '';
	}

	public function encode($var)
	{
		switch (gettype($var)) {
		case 'boolean':
			return $var ? 'true' : 'false';
		case 'NULL':
			return 'null';
		case 'integer':
			return (int) $var;
		case 'double':
		case 'float':
			return (double) $var;
		case 'string':
			$ascii = '';
			$strlen_var = strlen($var);

			for ($c = 0; $c < $strlen_var; ++$c) {
				$ord_var_c = ord($var[$c]);

				switch (true) {
				case $ord_var_c == 8:
					$ascii .= '\\b';
					break;

				case $ord_var_c == 9:
					$ascii .= '\\t';
					break;

				case $ord_var_c == 10:
					$ascii .= '\\n';
					break;

				case $ord_var_c == 12:
					$ascii .= '\\f';
					break;

				case $ord_var_c == 13:
					$ascii .= '\\r';
					break;

				case $ord_var_c == 34:
				case $ord_var_c == 47:
				case $ord_var_c == 92:
					$ascii .= '\\' . $var[$c];
					break;

				case (32 <= $ord_var_c) && ($ord_var_c <= 127):
					$ascii .= $var[$c];
					break;

				case ($ord_var_c & 224) == 192:
					$char = pack('C*', $ord_var_c, ord($var[$c + 1]));
					$c += 1;
					$utf16 = $this->utf82utf16($char);
					$ascii .= sprintf('\\u%04s', bin2hex($utf16));
					break;

				case ($ord_var_c & 240) == 224:
					$char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]));
					$c += 2;
					$utf16 = $this->utf82utf16($char);
					$ascii .= sprintf('\\u%04s', bin2hex($utf16));
					break;

				case ($ord_var_c & 248) == 240:
					$char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]));
					$c += 3;
					$utf16 = $this->utf82utf16($char);
					$ascii .= sprintf('\\u%04s', bin2hex($utf16));
					break;

				case ($ord_var_c & 252) == 248:
					$char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]), ord($var[$c + 4]));
					$c += 4;
					$utf16 = $this->utf82utf16($char);
					$ascii .= sprintf('\\u%04s', bin2hex($utf16));
					break;

				case ($ord_var_c & 254) == 252:
					$char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]), ord($var[$c + 4]), ord($var[$c + 5]));
					$c += 5;
					$utf16 = $this->utf82utf16($char);
					$ascii .= sprintf('\\u%04s', bin2hex($utf16));
					break;
				}
			}

			return '"' . $ascii . '"';
		case 'array':
			if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
				$properties = array_map(array($this, 'name_value'), array_keys($var), array_values($var));

				foreach ($properties as $property) {
					if (Services_JSON::isError($property)) {
						return $property;
					}
				}

				return '{' . join(',', $properties) . '}';
			}

			$elements = array_map(array($this, 'encode'), $var);

			foreach ($elements as $element) {
				if (Services_JSON::isError($element)) {
					return $element;
				}
			}

			return '[' . join(',', $elements) . ']';
		case 'object':
			$vars = get_object_vars($var);
			$properties = array_map(array($this, 'name_value'), array_keys($vars), array_values($vars));

			foreach ($properties as $property) {
				if (Services_JSON::isError($property)) {
					return $property;
				}
			}

			return '{' . join(',', $properties) . '}';
		default:
			return $this->use & SERVICES_JSON_SUPPRESS_ERRORS ? 'null' : new Services_JSON_Error(gettype($var) . ' can not be encoded as JSON string');
		}
	}

	public function name_value($name, $value)
	{
		$encoded_value = $this->encode($value);

		if (Services_JSON::isError($encoded_value)) {
			return $encoded_value;
		}

		return $this->encode(strval($name)) . ':' . $encoded_value;
	}

	public function reduce_string($str)
	{
		$str = preg_replace(array('#^\\s*//(.+)$#m', '#^\\s*/\\*(.+)\\*/#Us', '#/\\*(.+)\\*/\\s*$#Us'), '', $str);
		return trim($str);
	}

	public function decode($str)
	{
		$str = $this->reduce_string($str);

		switch (strtolower($str)) {
		case 'true':
			return true;
		case 'false':
			return false;
		case 'null':
			return NULL;
		default:
			$m = array();

			if (is_numeric($str)) {
				return (double) $str == (int) $str ? (int) $str : (double) $str;
			}
			else {
				if (preg_match('/^("|\').*(\\1)$/s', $str, $m) && ($m[1] == $m[2])) {
					$delim = substr($str, 0, 1);
					$chrs = substr($str, 1, -1);
					$utf8 = '';
					$strlen_chrs = strlen($chrs);

					for ($c = 0; $c < $strlen_chrs; ++$c) {
						$substr_chrs_c_2 = substr($chrs, $c, 2);
						$ord_chrs_c = ord($chrs[$c]);

						switch (true) {
						case $substr_chrs_c_2 == '\\b':
							$utf8 .= chr(8);
							++$c;
							break;

						case $substr_chrs_c_2 == '\\t':
							$utf8 .= chr(9);
							++$c;
							break;

						case $substr_chrs_c_2 == '\\n':
							$utf8 .= chr(10);
							++$c;
							break;

						case $substr_chrs_c_2 == '\\f':
							$utf8 .= chr(12);
							++$c;
							break;

						case $substr_chrs_c_2 == '\\r':
							$utf8 .= chr(13);
							++$c;
							break;

						case $substr_chrs_c_2 == '\\"':
						case $substr_chrs_c_2 == '\\\'':
						case $substr_chrs_c_2 == '\\\\':
						case $substr_chrs_c_2 == '\\/':
							if ((($delim == '"') && ($substr_chrs_c_2 != '\\\'')) || (($delim == '\'') && ($substr_chrs_c_2 != '\\"'))) {
								$utf8 .= $chrs[++$c];
							}

							break;

						case preg_match('/\\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
							$utf16 = chr(hexdec(substr($chrs, $c + 2, 2))) . chr(hexdec(substr($chrs, $c + 4, 2)));
							$utf8 .= $this->utf162utf8($utf16);
							$c += 5;
							break;

						case (32 <= $ord_chrs_c) && ($ord_chrs_c <= 127):
							$utf8 .= $chrs[$c];
							break;

						case ($ord_chrs_c & 224) == 192:
							$utf8 .= substr($chrs, $c, 2);
							++$c;
							break;

						case ($ord_chrs_c & 240) == 224:
							$utf8 .= substr($chrs, $c, 3);
							$c += 2;
							break;

						case ($ord_chrs_c & 248) == 240:
							$utf8 .= substr($chrs, $c, 4);
							$c += 3;
							break;

						case ($ord_chrs_c & 252) == 248:
							$utf8 .= substr($chrs, $c, 5);
							$c += 4;
							break;

						case ($ord_chrs_c & 254) == 252:
							$utf8 .= substr($chrs, $c, 6);
							$c += 5;
							break;
						}
					}

					return $utf8;
				}
				else {
					if (preg_match('/^\\[.*\\]$/s', $str) || preg_match('/^\\{.*\\}$/s', $str)) {
						if ($str[0] == '[') {
							$stk = array(SERVICES_JSON_IN_ARR);
							$arr = array();
						}
						else if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
							$stk = array(SERVICES_JSON_IN_OBJ);
							$obj = array();
						}
						else {
							$stk = array(SERVICES_JSON_IN_OBJ);
							$obj = new stdClass();
						}

						array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => 0, 'delim' => false));
						$chrs = substr($str, 1, -1);
						$chrs = $this->reduce_string($chrs);

						if ($chrs == '') {
							if (reset($stk) == SERVICES_JSON_IN_ARR) {
								return $arr;
							}
							else {
								return $obj;
							}
						}

						$strlen_chrs = strlen($chrs);

						for ($c = 0; $c <= $strlen_chrs; ++$c) {
							$top = end($stk);
							$substr_chrs_c_2 = substr($chrs, $c, 2);
							if (($c == $strlen_chrs) || (($chrs[$c] == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
								$slice = substr($chrs, $top['where'], $c - $top['where']);
								array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => $c + 1, 'delim' => false));

								if (reset($stk) == SERVICES_JSON_IN_ARR) {
									array_push($arr, $this->decode($slice));
								}
								else if (reset($stk) == SERVICES_JSON_IN_OBJ) {
									$parts = array();

									if (preg_match('/^\\s*(["\'].*[^\\\\]["\'])\\s*:\\s*(\\S.*),?$/Uis', $slice, $parts)) {
										$key = $this->decode($parts[1]);
										$val = $this->decode($parts[2]);

										if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
											$obj[$key] = $val;
										}
										else {
											$obj->$key = $val;
										}
									}
									else if (preg_match('/^\\s*(\\w+)\\s*:\\s*(\\S.*),?$/Uis', $slice, $parts)) {
										$key = $parts[1];
										$val = $this->decode($parts[2]);

										if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
											$obj[$key] = $val;
										}
										else {
											$obj->$key = $val;
										}
									}
								}
							}
							else {
								if ((($chrs[$c] == '"') || ($chrs[$c] == '\'')) && ($top['what'] != SERVICES_JSON_IN_STR)) {
									array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs[$c]));
								}
								else {
									if (($chrs[$c] == $top['delim']) && ($top['what'] == SERVICES_JSON_IN_STR) && (((strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2) != 1)) {
										array_pop($stk);
									}
									else {
										if (($chrs[$c] == '[') && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
											array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
										}
										else {
											if (($chrs[$c] == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
												array_pop($stk);
											}
											else {
												if (($chrs[$c] == '{') && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
													array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
												}
												else {
													if (($chrs[$c] == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
														array_pop($stk);
													}
													else {
														if (($substr_chrs_c_2 == '/*') && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
															array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
															$c++;
														}
														else {
															if (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
																array_pop($stk);
																$c++;

																for ($i = $top['where']; $i <= $c; ++$i) {
																	$chrs = substr_replace($chrs, ' ', $i, 1);
																}
															}
														}
													}
												}
											}
										}
									}
								}
							}
						}

						if (reset($stk) == SERVICES_JSON_IN_ARR) {
							return $arr;
						}
						else if (reset($stk) == SERVICES_JSON_IN_OBJ) {
							return $obj;
						}
					}
				}
			}
		}
	}

	public function isError($data, $code = NULL)
	{
		if (class_exists('pear')) {
			return PEAR::isError($data, $code);
		}
		else {
			if (is_object($data) && ((get_class($data) == 'services_json_error') || is_subclass_of($data, 'services_json_error'))) {
				return true;
			}
		}

		return false;
	}
}

define('SERVICES_JSON_SLICE', 1);
define('SERVICES_JSON_IN_STR', 2);
define('SERVICES_JSON_IN_ARR', 3);
define('SERVICES_JSON_IN_OBJ', 4);
define('SERVICES_JSON_IN_CMT', 5);
define('SERVICES_JSON_LOOSE_TYPE', 16);
define('SERVICES_JSON_SUPPRESS_ERRORS', 32);

if (class_exists('PEAR_Error')) {
	class Services_JSON_Error extends PEAR_Error
	{
		public function Services_JSON_Error($message = 'unknown error', $code = NULL, $mode = NULL, $options = NULL, $userinfo = NULL)
		{
			parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
		}
	}
}
else {
	class Services_JSON_Error
	{
		public function Services_JSON_Error($message = 'unknown error', $code = NULL, $mode = NULL, $options = NULL, $userinfo = NULL)
		{
		}
	}
}

?>
